diff --git a/lib/Cron/Workers/SendingQueue/SendingQueue.php b/lib/Cron/Workers/SendingQueue/SendingQueue.php
index 02eae97ebd..b7e494f5ec 100644
--- a/lib/Cron/Workers/SendingQueue/SendingQueue.php
+++ b/lib/Cron/Workers/SendingQueue/SendingQueue.php
@@ -42,9 +42,11 @@ class SendingQueue {
       }
       // get subscribers
       $queue->subscribers = SubscribersTask::get($queue->subscribers);
-      foreach(array_chunk($queue->subscribers['to_process'], self::BATCH_SIZE)
-              as $subscribers_to_process_ids
-      ) {
+      $subscriber_batches = array_chunk(
+        $queue->subscribers['to_process'],
+        self::BATCH_SIZE
+      );
+      foreach($subscriber_batches as $subscribers_to_process_ids) {
         $found_subscribers = SubscriberModel::whereIn('id', $subscribers_to_process_ids)
           ->findArray();
         $found_subscribers_ids = Helpers::arrayColumn($found_subscribers, 'id');
diff --git a/lib/Models/Subscriber.php b/lib/Models/Subscriber.php
index 99bb80962a..98a1eef541 100644
--- a/lib/Models/Subscriber.php
+++ b/lib/Models/Subscriber.php
@@ -666,8 +666,8 @@ class Subscriber extends Model {
       '(' . implode(', ', $columns) . ') ' .
       'VALUES ' . rtrim(
         str_repeat(
-          '(' . rtrim(str_repeat('?,', count($columns)), ',') . ')' . ', '
-          , count($values)
+          '(' . rtrim(str_repeat('?,', count($columns)), ',') . ')' . ', ',
+          count($values)
         ),
         ', '
       ),
diff --git a/lib/Models/SubscriberCustomField.php b/lib/Models/SubscriberCustomField.php
index 8d5eb70729..c036b765f1 100644
--- a/lib/Models/SubscriberCustomField.php
+++ b/lib/Models/SubscriberCustomField.php
@@ -58,8 +58,8 @@ class SubscriberCustomField extends Model {
       '(custom_field_id, subscriber_id, value) ' .
       'VALUES ' . rtrim(
         str_repeat(
-          '(?, ?, ?)' . ', '
-          , count($values)
+          '(?, ?, ?)' . ', ',
+          count($values)
         ), ', '
       ),
       Helpers::flattenArray($values)